989710650 has 120 divisors (see below), whose sum is σ = 2838996864. Its totient is φ = 255376800.

The previous prime is 989710643. The next prime is 989710697. The reversal of 989710650 is 56017989.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 989710596 and 989710605.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 121609 + ... + 129491.

Almost surely, 2^989710650 is an apocalyptic number.

989710650 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 989710650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1419498432).

989710650 is an abundant number, since it is smaller than the sum of its proper divisors (1849286214).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

989710650 is a wasteful number, since it uses less digits than its factorization.

989710650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7938 (or 7924 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 45.

The square root of 989710650 is about 31459.6670357459. The cubic root of 989710650 is about 996.5583855449.

The spelling of 989710650 in words is "nine hundred eighty-nine million, seven hundred ten thousand, six hundred fifty".